Now showing items 1-20 of 29

    • Breakage function for HPGR: mineral and mechanical characterization of tantalum and tungsten ores 

      Anticoi Sudzuki, Hernán Francisco; Guasch Cascallo, Eduard; Hamid, Sarbast; Oliva Moncunill, Josep; Alfonso Abella, María Pura; García-Vallès, Maite; Bascompta Massanes, Marc; Sanmiquel Pera, Lluís; Escobet Canal, Teresa; Argelaguet Isanta, María Rosa; Escobet Canal, Antoni; Felipe Blanch, José Juan de; Parcerisa Duocastella, David; Peña Pitarch, Esteve (2018-04-20)
      Article
      Open Access
      The modelling of high pressure grinding rolls is described by the population balance model, a mass balance which includes several functions that are related to the mineral characteristics, material kinetics and operative ...
    • Calcium phosphate glasses: Silanation process and effect on the bioactivity behavior of Glass-PMMA composites 

      Morejon Alonso, lizette; Delgado Garcia-Menocal, Jose Angel; Tarrago Aymerich, Mariona; Alvarez Guichard, Julio Andres; García-Vallès, Maite; Martínez Manent, Salvador; Ginebra Molins, Maria Pau (2014-02-01)
      Article
      Restricted access - publisher's policy
      This article presents the results of a study of the efficiency of silanation process of calcium phosphate glasses particles and its effect on the bioactivity behavior of glass- poly(methyl methacrylate) (PMMA) composites. ...
    • Fabrication of glass-based products as remediation alternative for contaminated urban soils of Barcelona 

      Roca Pascual, Núria; García-Vallès, Maite; Alfonso Abella, María Pura (2021-12-15)
      Article
      Open Access
    • Fe in P-doped basaltic melts: a Mössbauer spectroscopy study 

      Tarragó Aymerich, Mariona; García-Vallès, Maite; Méndez Martínez, Salvador; Pradell Cara, Trinitat; Bruna Escuer, Pere (2018-10-01)
      Article
      Open Access
      The addition of P to a basalt causes a change in the environment of Fe. At low P contents iron is located in the glass structure and the Fe3+/Fe2+ ratio is about 80/20. Further addition of P causes a collapse of the glass ...
    • Glass-ceramic crystallization from tailings of the Morille tungsten deposit, Spain 

      Tomasa Guix, Oriol; García-Vallès, Maite; Alfonso Abella, María Pura; Tarragó Aymerich, Mariona; Martínez Manent, Salvador (2021)
      Conference lecture
      Open Access
    • Kaolin from Acoculco (Puebla, Mexico) as raw material: mineralogical and thermal characterization 

      García-Vallès, Maite; Alfonso Abella, María Pura; Canet Miquel, Carles; Martínez Manent, Salvador; Jiménez-Franco, Abigail; Tarrago Aymerich, Mariona; Hernández Cruz, Berenice (2015-08)
      Article
      Open Access
    • Liberation characteristics of Ta–Sn ores from Penouta, NW Spain 

      Alfonso Abella, María Pura; Hamid, Sarbast Ahmid; Anticoi Sudzuki, Hernán Francisco; García-Vallès, Maite; Oliva Moncunill, Josep; Tomasa Guix, Oriol; López Moro, Francisco Javier; Bascompta Massanes, Marc; Llorens, Teresa; Castro López, David; García Polonio, Francisco (2020-05-31)
      Article
      Open Access
      The strategic importance of tantalum and its scarcity in Europe makes its recovery fromlow grade deposits and tailings interesting. In Penouta, the contents of Ta and Sn in old tailingsfrom an Sn mine are of economic ...
    • Mineral assemblages in the tin (-indium) Santa Fe mining district, Bolivia 

      Jiménez-Franco, Abigail; Alfonso Abella, María Pura; Canet Miquel, Carles; Trujillo, Juan Elvys; García-Vallès, Maite (2016)
      Conference lecture
      Open Access
      Covenantee:   Universidad Técnica de Oruro / Universidad Nacional Autónoma de México / Universitat de Barcelona
      The Santa Fe Mining District (SFD) is located in the Bolivian portion of the Central Andean Belt, which is an important tin province that hosts abundant world-class deposits, some of them with high indium content. In this ...
    • Mineral chemistry as a tool for optimization the mineral processing in the Central Andean Tin Belt 

      Jiménez-Franco, Abigail; Payà Campo, Anna María; Alfonso Abella, María Pura; García-Vallès, Maite (European Association of Geochemistry (EAG), 2017)
      Conference lecture
      Open Access
      Covenantee:   Universidad Técnica de Oruro
      The Central Andean tin belt is a metallogenic province, well-known by Sn, Ag, Pb, Zn, and W. However, in the Bolivian sector there is potential for strategic elements, mainly Indium, but still uncertain. In the present ...
    • Mineralogical and thermal characterization of borate minerals from Rio Grande deposit, Uyuni (Bolivia) 

      García-Vallès, Maite; Alfonso Abella, María Pura; Arancibia Balderrama, Jhony Roger Hanz; Martínez Manent, Salvador; Parcerisa Duocastella, David (2016-08)
      Article
      Open Access
    • Mineralogical and thermal characterization of kaolinitic clays from Terra Alta (Catalonia, Spain) 

      García-Vallès, Maite; Alfonso Abella, María Pura; Martínez Manent, Salvador; Roca Pascual, Núria (2020-02-01)
      Article
      Open Access
      This research characterizes the kaolinitic clays from Cretaceous–Paleocene lateritic deposits of Terra Alta (south Catalonia) to evaluate their possible applications. The outcrops and quarries belong to the Horta de Sant ...
    • Mineralogical characterisation of tantalum ores for the optimization of their processing 

      Alfonso Abella, María Pura; Oliva Moncunill, Josep; García-Vallès, Maite; Tomasa Guix, Oriol; Calvo Torralba, Daniel; Guasch Cascallo, Eduard; Anticoi Sudzuki, Hernán Francisco; Parcerisa Duocastella, David (2016-10-19)
      Article
      Open Access
    • Mineralogical characterization of Sn deposits from the Santa Fe District, Bolivia 

      Jiménez-Franco, Abigail; Alfonso Abella, María Pura; Canet Miquel, Carles; García-Vallès, Maite; Trujillo, Juan Elvys (2015)
      Conference lecture
      Open Access
      Covenantee:   Universidad Técnica de Oruro / Universidad de Castilla-La Mancha / Universitat de Barcelona
      The Sn-Zn-Pb-Ag Japo-Santa Fe-Morococala ore deposit is located in the Central Andean Belt province. The ore mineralization is hosted in a Paleozoic metasedimentary sequence and porphyritic Oligocene-Miocene igneous rocks. ...
    • Mineralogía del depósito de Sn del distrito de Santa Fe, Bolivia 

      Jiménez-Franco, Abigail; Alfonso Abella, María Pura; Canet Miquel, Carles; García-Vallès, Maite; Trujillo, Juan Elvys (2017-06)
      Article
      Open Access
      Covenantee:   Universidad de Castilla-La Mancha / Universitat de Barcelona / Universidad Técnica de Oruro
      El depósito de Sn-Zn-Pb-Ag de Japo-Santa Fe-Morococala se encuentra en la provincia metalogenética del cinturón Central Andino. La mineralización se encuentra encajada en una secuencia metasedimentaria paleozoica y rocas ...
    • Mineralogía del yacimiento VMS de Zn-Cu-Pb-Ag-Au de Tizapa, México 

      Alfonso Abella, María Pura; Torró Abat, Lisard; Canet Miquel, Carles; Parcerisa Duocastella, David; García-Vallès, Maite; Mata Perelló, Josep Maria; Mesa Vílchez, Claudia; González Partida, Eduardo (Sociedad Española de Mineralogía, 2011)
      Conference lecture
      Open Access
    • Mineralogy of the Santa Fe tin deposit, Bolivia 

      Jiménez-Franco, Abigail; Alfonso Abella, María Pura; Canet Miquel, Carles; García-Vallès, Maite; Trujillo, Juan Elvys (European Geosciences Union (EGU), 2014)
      Conference lecture
      Open Access
      Covenantee:   Universidad Técnica de Oruro / Universidad de Castilla-La Mancha / Universitat de Barcelona
      Santa Fe is a Sn-Zn-Pb-Ag ore deposit located in the Oruro district, Central Andean Tin Belt, Bolivia. Mineralization occurs in veins and disseminations. It is hosted in Silurian shales and greywackes. The sedimentary ...
    • MINROCIND una eina d’aprenentatge presencial e interactiva dels jaciments de roques i minerals industrials a Catalunya: eina d'aprenentatge presencial i/o interactiu en el àmbit dels ensenyaments de la mineralogia i petrologia aplicada 

      Alfonso Abella, María Pura; García-Vallès, Maite; Vallejo, Raquel (Octaedro, 2012)
      Conference report
      Open Access
      Es presenta un nou material didàctic elaborat per a assolir l’aprenentatge de les roques industrials. Consta d’una part física i una altra virtual. La primera està constituïda per una mostra de roca polida i la seva ...
    • Modeling the liberation of comminuted scheelite using mineralogical properties 

      Hamid, Sarbast; Alfonso Abella, María Pura; Oliva Moncunill, Josep; Anticoi Sudzuki, Hernán Francisco; Guasch Cascallo, Eduard; Hoffmann Sampaio, Carlos; García-Vallès, Maite; Escobet Canal, Teresa (2019-09-03)
      Article
      Open Access
      In this paper, the modeling of the liberation of scheelite is presented. A pattern of concentration experiments was performed to investigate the scheelite liberation and distribution density calculation procedure. In this ...
    • Nb-Ta oxide minerals of alluvial placers from the Sunsás belt, precambrian shield of Bolivia 

      Alfonso Abella, María Pura; Oliva Moncunill, Josep; Calvo Torralba, Daniel; Parcerisa Duocastella, David; García-Vallès, Maite (2015)
      Conference lecture
      Open Access
    • Obtención de vidrio a partir de residuos de la minería del estaño en Bolivia 

      Arancibia, Jhony Roger Hanz; Alfonso Abella, María Pura; García-Vallès, Maite; Martínez Manent, Salvador; Canet Miquel, Carles; Romero, Francisco Martín (2013)
      Article
      Open Access
      Los residuos generados por las actividades mineras en Bolivia representan graves problemas de contaminación ambiental. En las proximidades de las minas de estaño de Llallagua, en el Departamento de Potosí, existen escombreras ...